Heading-machine.



1.'P.KARNS. HEADING MACHINE.

APPLICATION FILED OCT. 4, 1915.

Atgcorneys.

1 P. KARNS. HEADING MACHINE. APPLICATON' FILED OCT. 4. 15H5.

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Witnesses lnvenior,V

nemers' rsu-ns co.. Pnamurua. wAsmucrunfo. c.

'1. P. KARNS.

l HEADING MACHINE. APPLICATION FILED ocT. 4, 1915.

Patented July 2, 1918.

Witnesses l Attorneys.

Nunms prrsru cv.. Novum-na. wAsmNnmN n c.

.1. P. KARNS. HEADING MAcHlNE.

APPLICATION FILED OCT. 4. |915.

Patented July 2, 1918.

4 SHEETS-SHEET 4.

. Inventor,

Witnesses Attorneys 'mD STATES 'PATENT OFFICE.

JOHN PR'E KARNS, 0F BOULDER, COLORADO.A

HEADING-MACHINE.

To all whom it may concern: v

Beit known that lI, JOHN PfKARivs, a citizen of the' Uiiited- States, "residin at f Boulder, inthe county` of Boulder and tate of Coloradofvhave invented aneW and useful Heading-Machine, of Whichgthe following is a specification.V Y 'f f l The *device formingrthe ysubject matter of this application is adapted to-be employed,

primarily,` but not eXclusively,ror Yboring blast holesinto the-breast of amine ovv/orking;

One object of the presentfinvention yisto Aimparting axcombined Another object of the invention is vrtoaprovidel lnovel meansfor moving longitudinally of the machine,-for adjustment, a carriage comprising a cylinderand a `pistonthe latvter lbeing *operatively connected Withitlie cutter shaft. :i i y' Another object of `the invention nis to'improve vi thenut and 'abutment construction whereivithf cooperates ythe feed screw whereby the movement .of the 'carriageis con'- trolled. c Y f ,v

f Itis within the province of the disclosure to improve generally and' to enhance the utility ofdevices of 'that type tovvhich the present invention appertainsf With the above and other .objects in view vvhich Will appear as theY description proceeds, the invention resides in the combina'- tion and arrangement of: arts .and inthe details of construction hereinafter described and claimed, Tit being ':u'n'derstoodl that changes in the precise embodimentwof the invention herein disclosed can be vmade vvithin the scope of what isolaimed, 'Without departingl from the spirit of the invention.' ZIn .the accompanying drawings c i Figure -1 yshows iny Iside? elevation,` 'a ,head-A ing .machine embodying. the presentl lin'ven- Y -vFig. 2 is an end elevation ofthe-machine, looking tovvar'dvth'e rear endi'thereof; c Fig. S is `a 'vertical longitudinal:sectional view i showing 4a' portion of the truck, "the vievv depicting particularly'the means Where-y is advanced manually, `at' the :Will of'- an operator; "if Figi lisa 'fragmental top plan of` the ehineg 111/5, s y

I n specificati@ of Lemusiaieni(` `Pate,ntl Jl11y22,`191`8. Appiication niealoctpber 4,1915. summation. y f; l

5-5 ofFig.4; 5 i t Figa 6, is "a fragmental horizontal Vsection taken through the nut vin rvvhiclrthe yfeed screvvWOrkS;

Fig. 7 is atop plan of the multi-Jpart'nut with Which the feedscrevv cooperates;

Fig, 8 isa secti'on'alvievv shovvingtherear portion of theJ sleeve in Which the fcu'tter shaftvvorks; i T

p Fig. '9 is across section :the line 91-9 I` of-Fig.8;' Y.

Fig. 10 is a cross section onthe f Fig. 514 is across section on vthe :line L1-.-4:

which rmeda' bore 2; l The floorof the mine is indicated at 3 and 'carries track rails 4, .adapted to betraversedf by .the Wheels f5 v Fig. 5 is a cross section taken on the line Fig. 12 isa sectionaldetail the y InfFig.*1 "of the'drawings,`theinumeral 11 f1 lindicatesthe breast of ka `mine Working' in v of a truck G embodying transverseL-*Ur-shaped brackets 7 carrying ippengiiides L*8 and 9 and lower guidesl'O vand 11. "The' lbottoms of the brackets 7 support" a` lovver4 track 12.

yAs shown in Fig: :1,icertainj of thefbrackets 7 vmay `be secured tothe -lower'tra'ck 12 yby meansy of. braces 14;v rlhe ybrackets??y carry opposedside tracks15 One` en'dofthe truck is.providedzvvith'r afhead 4platevil adapted to labut against'the breast :1 offther orking, the head .plateordinarily-being ing-'its position on th'e 'track railsfffinandto ioo maintain Vthe head plate 16 inv abutment with i the breast J1 'there f is` lprovidedl releasable holding A hangersl? kattached to'fthel guides a8 andi'y 9,

mechanism embodying f a pairuV :of

the hangers ysupporting -pivotally mountedV clevises 18j to fvvhichffare pivote'dklv rods 19 Ii.

threaded 'into tlie sleeves/:20'y and are*y pivoted to lopen f sided fclips 22' adapted to engage the the Asleeve 27 is a washer 30.

Fig, 3, the rods 19 and 21 and the sleeves 2O forming turnbuckles which, beiiig'tightened up, prevent a retrograde movement of the truck and serve to hold the headplate 16 in abutment with the breast 1.'

n `lvlounted to kmove for adjustment on the truck,'lbiifgitudiriallyof the trucl, but ordinarily held fiXed with `respect thereto,1is a carriage denoted generally by the numeral 2 3, the carriage being a composite structure.

The carriage 23 comprises a cylinder 24, ordmarily constituting :a party of a comvpressed airnotor of the reciprocating piston type. Secured to the forward end of the cylinder 24isa rear sleeve 25,.to the forward end ofwhich is secured an intermediate a-forward sleeve 27. 1 p

Especial attention being given toA Figs. 12,

sleeve 26,` the 'intermediate sleeve carrying .13A and 14:'of the drawings, it willbe observed that the forward sleeve 27 comprises separable; trough-,shaped parts 28 and 29. Seated in a groove in the forward. Y,end of Mounted in a groove 32 in the part 29 of the sleeve 27 is af half-ring 31 disposed opposite to a `halfrib'i33 on the part28. To the rear of the elements 33 and 31, the=forward sleevey 27 Vis provided witha circumscribinginternal 40, engaged in seats40a formed in the interior f they collar3f5. y.

Noting Figs. 8, 9,1 0 and 11, it willfbe 'seen that the rear sleeve 25 embodies coperating trough-"shaped parts 41 and`42. In the rear Asleeve v25near to the forward end thereof is `fashioned an internal circumscribing recess 43 in which is mounted for rotation, at times,

'but held against longitudinal movement, a vcollar 44fspac'ed from the sleeve 25 vantifrictionally 'by means vof balls 45. The collar 44 carries an external ratchet wheel'i46 adapted to be engaged by apawl 47 Ypivoted tothe part41 ofthe sleeve` 25. At this pointit may be` stated that the construction last above described resembles the pavvl and ratchet mechanism shown ink Fig. 14, saving forthe fact'rthat the teeth-.of the-ratchet wheels L46 and 371face in oppositcdirections,

fingly. Disposed within'fthe lcollzifr 44is va tubular ball lea-ge 48 carrying balls 49 seated in recesses 49a-infthe linterior ofthe collar collars u442211161 35"andattendant parts constitute vpawl, and ratchet mechanisms, the

the ybore 2 Vand adapted to coperate with the .with grooves;5,3in which are seated buffers 54 which may be made of hard rubber or some substancehaving the necessary resiliency, The buffers 54 are retained by twopart washers 55 shown clearly in Fig. 10.

Thepart 29 of the forward sleeve 27 carries .wheels 56 adapted to coperate with tracks 15 if the carriage 23 is retracted sufficiently on; the truck. The cylinder 24 Amaybe equipped with wheels 57 which cooperate with the side tracks 15 on the truck. The carriage 23 comprises, further, a single wheel 58 adapted to traverse the lower track -12 on the truck. i'. Mounted to `reciprocate in the cylinder 24 is apiston 59, the rod 60A of which, as

shown in Fig. 8 is provided with a socket 90 -61 receiving one 'end of a rod 62 held in place by a key 63. yThe rod 62 passes loosely through an opening 64 formed in one end of a main cap .65 held by means of a key 66 to one partA 67 of a cutter shaft. In its interior and upon its rear wall, the main cap 65 is rounded 'as shown at 68 to cooperate 'with a rounded washer 69 on the rod 62, the washer being held in place by an abutment 70 retained by afnut 71 housed 100 in ay chamber 72 formed in an auxiliary cap 73 .located within the main cap 65, the

forward end of the auxiliary cap 73 and the rear end ofthe part 67 of the cutter` shaft being rounded as shown at 74. From the foregoing it will be observed ,that the rod 62 is connected with the part 67 of the shaft by [what amounts to afballand socket joint,

such a structuregiving the necessary movements, should the part 67 of the 'cutter shaft 110 anfd the rod V62 be disposed slightly out of axial alinement. i p

The cutter shaft embodies a forward part 7 5f carryingat its `exposed extremity, ak cutter head76 .of anydesired construction'. In 115 the rear endio'f the shaft 75 is fashioned a socket-77 .in which the forward end lof the part 67 of the cutter shaftis received, the constituent members of the shaft being-held together for simultaneous rotation'hy'ineans 120 of a kev78.. Thepart 75of the shaft, as

shown in .F ig.- 8 isy equipped with spaced slioul'dersllO; adapted to coperaterespectively with the buffers 54,-should the lcutter shaft make a Ysufficiently long s[rokc,'a 125 contingency arising, for instance, when the cutter head 76 fails to strike theforward end of the bore 2. v

The-shaft .75l-67 isin'ounted for longitudinal reciprocation and for rotation in the washer 30, the rib 33 and the half-ring 31 of Fig. 12, in the ball'cage 39 of said figure,

in the ball. cage 48 of Fig. 8, in the rib-52 and thecorresponding part 50 and in the buders 54.` l

In the part V75 of' the cutter shaft are fashioned straight longitudinal grooves79 receiving the Yballs 49 whichl are interengaged with the collar 44. In" the part 75 of the cutter shaft are disposed'L 'spiral grooves 80 coacting with the balls 40 which are interengaged with' .the collar 35.

Noting particularly Figs.- 6l and 5, it will be seen that an abutment-81 is carried by the guides 8-9-10-11 for adjustment longitudinally of the machine, the abutment 81 being provided with a recess 82. 1^ Thefabutment' 81- is held in adjusted'position by means of keys 83, engaged vin' 'openings-84 in guides'9` and 11,`keys'85 co'peratingfwith the abutment 81* and theguides 8fand l10`to aid in holding the abutment `'inplacejthe parts 8 and 9 being provided a's'shown at 86y in Fig. 4, ywith lopenings whichreceive the keys 85. `Across the rear endofthe recess 82 `in the abutment 81 extends aback plate 87, held to the abutment by meansof a U-bolt 88 having an v'intermediate head 89. Disposed within the recess 82 of the abutment 81 is a four-part Vnut 90, the constituent members of which are provided along their forward and rear faces with flanges 91 engaging the upper and lower edges of the back plate 87 andthe intermediate forward portion of the abutment ,81.y The constituent members of thefnut 90 are held in place by means of bolts 92. Interpose'dbetween the sides of the multi-part nut 90 and the side walls of the recess 82 in the abutment 81 are wedges 93 and 94. The nut 90 may be shifted transversely and be held in adjusted position by means of the wedges 93 and 94. j

Passing through the head 89 of the U-bolt 88 and through. the forward portion of the abutment 81 and threaded into the multipart nut 90 is a feed screw 95 to the forward end of which is secured a disk96 having openings 97 adapted to receive pins 98 formed in the interior of a worm wheel 99 held for rotation in a circumscribing groove 100 formed ina head 101 on the rear of the cvlinder 24 and in a cap 102 secured to the head. In the head 101 is fashioned a curved recess 103, the edge of the disk 96 being shaped recess. 101 and in the cap 102 is a transverse'shaft 104 carrying a worm 105 meshing into the worm wheel 99. The ends 106 of the shaft 104 are adapted to receive a crank 107.

In practical. operation, when the piston 59 is drawn rearwardly, the cutter shaft 75-67 isd-rawn rearwardly also. YY1-lan thecutter .e5 shaft 674-75 is drawn rearwardly, the `eolythen ythe Apawl 47 will` holdI the collar 44 t0 conform to the curvature of thisH Journaled for rotation in the headv lar 35 is held against rotation, due tothe voo action between the ratchet wheel 37 and the pawl 38. #The balls 40, traversing'the spiral grooves 80,'impart a slight rotation to the cutter'shaft 67-75V as the latter lis' y'rej tracted; During this retracting movement 0f the shaft 67--75, the collar 44- rotates with the shaft, being interlocked therewith through the'instrumentality of the ballsl 49 and the straight grooves 79', `the pawl 47 clicking over the ratchet lwheel 46 due to the fact that the ratchet wheels 46 and 37 operate in opposite directions.` When, however, the cutter shafty 674-7 5 is advanced,

8O against rotation,`and the latter,through the i medium of the balls 49'fw'ill hold the shaft 67 .--7 -5 against rotation, the shaftadvancing by a"v straight'line movement,{as'5`.distin guished fromv a combined advancing and rotary movement.' -XVhen'the shaft 51s advanced, th'ecollar 35k rotates uponfth'e shaft,"the pawl 38 clicking overth'e rratc'shet Wheel'37ff`f j From 'thefforegoing :ity will be understood 9'0 that the cutter shaftf 67%-75 and thefpis't'on 59 reciprocate, and that the shaft rotates. as vit is retracted, the cutter yhead l7 6 fashioning the bore-filas the yshaftis advanced'. -During this operation, theJK carriage '235 is, nott fadvanced and. retracted, because the saine-is Aheld against longitudinal,movement by.' the coperation between the feed 'screw95 and the multi-part nut 90. "Neither ydoes the truckmove bodily on the trackrails 4,4 becausethe trudlis/ held by `the'turnbuckle construction 192021. At times it maybe desirable to advance the carriage 23 on the truck, and when such an operation is desired, the feed screw V95 yis rotated by means of the worm wheel 99, the worm 105,'the shaft 104 and the crank 107, the feedscrew traversing the multi-part nut V and advancing the; carriage 23, the wheels 57 ofl Vwhich move along the tracks 15, the wheel 58 moving along the track 12 and the wheels f 56 traversing the bore 2. Y

The position of the abutment 81 longitudinally of the carriage may be adjusted by mounting the keys 83 and85 successively in 115 the openings 84and86.` Y

Although the shaft 75 and the cap 65 rotate, Vthe rod 62 and the piston 60 do not rotate, especial attention being directed to the element 70 of Fig. 8, andfattendant parts, 120 whereby such an operation is possible.

Having thus described the invention, what is claimed is 1. In a mining machine, a truck; a, track f carried bythe truck; a carriage mounted 125y with the truck for bottling abutment.. in is@ adjusted positions longitudinally of the truck; a nut mounted in thekabutment; a feed screw .threadedinto the nut; means under the control ofan operator for actuating the feed screw; and meansfor connecting `the feed screw with the carriage for rotation 'but against movement longitudinally ofthe carriage.

2. In a mining machine; a truck; a .track carried by the truck; acarriage mounted to move along the track; acutter assembled with the carriage; an abutment mounted on thetruck for adjustmentlongitudinally of the truck; means connecting the abutment with the truck for holding the abutment in adjusted positions longitudinally of the truck; a nut carried by the abutment; a feed screw threaded into the nut; means for oonnecting the feed screw With thecarriage for rotation but against `movement longitudinally of the carriage; a Worm. wheel assembled with the feedk screw and journaled in the carriage; and a Wornidisposed transversely of the feed screw and assembled with the rear end ofthe carriage and meshing into the worm Wheel. i

3. In a mining machine, a truck; atrack carried bythe truck; a carrlagemounted to move along the track; a cutterassembled With the carriage; an abutment mounted on thetruck; a nut assembled With the abutment; a feed screw threaded into the nut and provided With a 'ball head, the rear` end of the carriage comprising a member having a recess in which the head rocks; a Worm Wheel 1n said member; means for plvotally assembling the Worm Wheel with the head;

and a Worm journaled in said member land meshing into the Worm wheel.

4f. In a mining machine, a truck including transverse brackets; a track carried by the lower portions ofthe brackets; a carriage; means on' the carriage forengaging the track slidably; other tracks carried by the side portions ofthe brackets; means on the carriage for engaging the last specified tracks slidably; guides carried by the side portions of the brackets; an abutment slidably Areceived by the brackets; means connecting the abutment and the guides for holding the abutment in adjusted positions on the guides longitudinally of the guides; anut carried by theabutment; a feed screw threaded in the nut; means under the control of an operator for actuating the feed screw; a cutter mounted on the. carriage; and means for connecting one end of the feed screw with the carriage for rotation but against movement longitudinally of the carriage. l

In testimony that I claim the foregoing as my own, I have hereto aliiXed my signature in the presence of two Witnesses.

JOHN PRUE Kanus'.

Witnesses:

, HENRY D. MoYLn,

J. R. BELGHER.

Gomes of this patent may beebtaind for v cents each, by addressing the Commissioner of Patents,

i Washington, D. CJ 

